Overview

overview

10

Static

static

10

c890d39d06...9c.exe

windows7-x64

10

c890d39d06...9c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c890d39d06a7d437d44a92b4a3f98e55c9cfb112b9ae8955d098dd5e1b93cd9c.exe

  • Size

    811KB

  • Sample

    250122-d45j3awrdp

  • MD5

    2e4246ce82069e5e1f389e556634d683

  • SHA1

    2beb8cbe24d8775df79abaeb38fae72e96719d08

  • SHA256

    c890d39d06a7d437d44a92b4a3f98e55c9cfb112b9ae8955d098dd5e1b93cd9c

  • SHA512

    db52a5460d82bd1d8a250b2de68e3f0b55e7dbb044ccaf034484782cc2a7bc8e5c546954d3b6587b65be63181bf5f8c0603619d8438fb1c14744438fe78e66a8

  • SSDEEP

    12288:kKIIhtQY47i/eIFdRgbE1ooBQdpW3Ari4VVyZC0+1cXOoxPRq/6:kCaY4gFdRgbiooBQd3iE0n/xa6

Score
10/10
dcratexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      c890d39d06a7d437d44a92b4a3f98e55c9cfb112b9ae8955d098dd5e1b93cd9c.exe

    • Size

      811KB

    • MD5

      2e4246ce82069e5e1f389e556634d683

    • SHA1

      2beb8cbe24d8775df79abaeb38fae72e96719d08

    • SHA256

      c890d39d06a7d437d44a92b4a3f98e55c9cfb112b9ae8955d098dd5e1b93cd9c

    • SHA512

      db52a5460d82bd1d8a250b2de68e3f0b55e7dbb044ccaf034484782cc2a7bc8e5c546954d3b6587b65be63181bf5f8c0603619d8438fb1c14744438fe78e66a8

    • SSDEEP

      12288:kKIIhtQY47i/eIFdRgbE1ooBQdpW3Ari4VVyZC0+1cXOoxPRq/6:kCaY4gFdRgbiooBQd3iE0n/xa6

    Score
    10/10
    dcratexecutioninfostealerpersistenceratspywarestealer

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      rat

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks